4.4. SR 03-20-2017 - Laserfiche WebLink

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Permit Modified: October 15, 2014 Elk' River WWTF Page 17 Permit Expires: dune 30, 2018 Chapter 5. Surface Discharge Stations 7. Priority Pollutants - Monitoring Requirements Permit 9: MN0020789 7.1 The Permittee shall monitor the effluent three times in the life of the permit for the fallowing specified priority pollutants. Sampling events shall not be less than one year apart. Monitoring shall be for the organic priority pollutants identified under the volatile, acid, base/neutral, and pesticide fractions using EPA methods 624, 625 and 648 (40 CFR Part 136, October 25, 1984) as listed in Table II of 40 CFR Fart 122, Appendix D. The following priority pollutant total metals shall also be monitored using either EPA method 200.8 or their corresponding graphite furnace method found in Table IS of 40 CFR Part 136: antimony, arsenic, beryl Iium, cadmium, chromium, copper, lead, nickel, selenium., silver, thallium, and zinc. In addition, the Permittee shall monitor for Total Cyanide (EPA method 335), Total Phenolic Compounds (EPA method 420), and Hardness (total as CaCO3) (EPA method 13.0). Total Mercury shall be monitored by EPA, method 1631, if not already required by the permit. 7.2 Submit the results of the first sampling event no later than three years prior to the expiration date of this permit. 7.3 Submit the results of the second sampling event no later than two years prior to the expiration date of this permit. 7.4 Submit the results of the third or final sampling event no later than one year prior to the expiration date of this permit. S. Discharge Monitoring Reports 8.1 The Permittee shall submit monitoring results for discharges in accordance with the limits and monitoring requirements for this station. If no discharge occurred during the reporting period, the Permittee shall check the "No Discharge" box on the Discharge Monitoring Report (DMR). Chapter 5. Waste Stream Stations 1.. Requirements for Specific Stations 1.1 WS 001: Submit a monthly DMR by 21 days after the end of each calendar month following permit issuance. 2. Sampling Location 2.1 Grab and composite samples for Station WS001 shall be collected at a point representative of total influent flow to the system. 3. Mercury Limits and Monitoring Requirements 3.1 Total Mercury samples must be grab samples and must be analyzed using EPA Method 1631 with clean techniques method 1669 and any revisions to those methods. Should another mercury analytical method that has a reportable quantitation level that allows for low-level sample characterization be approved by the EPA. and certified by the Minnesota Department of Health, the Permittee is authorized to use that method. 4. Nitrogen Limits and Monitoring Requirements 4.1 "Total Nitrogen" is to be reported as the summation of the Total Kjeldahl Nitrogen and Total Nitrite + Nitrate Nitrogen values.